KHEF · Washington Manassas Harry P. Davis Field

MANASSAS, VIRGINIA · MEDIUM AIRPORT

192

Elevation ft

Runways

6,200

Longest ft · 16L/34R

38.72N

77.52W

Washington Manassas Harry P. Davis Field serves Manassas, Virginia at 192 ft elevation with its longest runway, 16L/34R, at 6,200 by 100 ft. The figures below are computed from FAA NASR runway data (via OurAirports) and the same rules of thumb JetDesk uses on the airport page in the app; the POH and current NOTAMs are the authority.

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01Runways

Runway	Length × width	Surface	Lighting
16L/34R	6,200 × 100 ft	asphalt	lit
16R/34L	3,715 × 75 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 192 ft is about 15°C. Every 1,000 ft of density altitude adds roughly 8 percent to a turboprop's takeoff distance and 5 percent to its landing distance. The table uses Piper Meridian book numbers (2,438 ft takeoff and 2,110 ft landing over a 50 ft obstacle at sea level, ISA, max weight) as a reference airplane; heavier turboprops and light jets scale the same way from their own POH figures.

Conditions	Density altitude	Takeoff est.	Landing est.	Landing × 1.5
Standard day (ISA, 15°C)	192 ft	2,475 ft	2,130 ft	3,195 ft
Warm day (ISA +10)	1,392 ft	2,709 ft	2,257 ft	3,385 ft
Hot day (ISA +20)	2,592 ft	2,944 ft	2,383 ft	3,575 ft
35°C afternoon	2,638 ft	2,953 ft	2,388 ft	3,582 ft

Planning aid only. Even on a 35°C afternoon the longest runway (16L/34R, 6,200 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,582 ft needed). The percentages are a generic rule of thumb applied to one reference airplane, not certified performance data for any specific aircraft, and the runway size categories describe the runway, not your airplane's suitability. Verify with the approved flight manual before every flight.

03Nearby fields with 5,000 ft or more

Useful as alternates, as fuel stops when the price at KHEF is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KIAD Washington Dulles International Airport	14 nm N	11,500 ft
KRMN Stafford Regional Airport	20 nm S	6,000 ft
KCJR Culpeper Regional Airport	20 nm SW	5,000 ft
KJYO Leesburg Executive Airport	21 nm N	5,500 ft

04Jet A prices and FBOs at KHEF

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KHEF, the app flags a price stale after two weeks, and the route finder ranks every field within a corridor of your route by net savings after the cost of the extra cycle. Log a price at KHEF or read what a fuel stop actually saves.

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